Efficacy of fluopyram applied by chemigation on controlling eggplant root-knot nematodes (Meloidogyne spp.) and its effects on soil properties

Abstract

The root-knot nematode ( Meloidogyne spp.) is one of the major challenges in eggplant ( Solanum melongena L.) production. Fluopyram, known to be an effective fungicide, is also used for controlling root-knot nematode. However, in China, little information is currently available regarding the efficacy of fluopyram via chemigation against root-knot nematode and its effects on soil properties. For this, the objective of this work was to test mortality of root-knot nematode, functional diversity of soil microbial community, activity of soil enzyme after fluopyram applicated by chemigation. The results of two field experiments revealed that concentration of 60 g·ha -1 fluopyram applied with 200 L·ha -1 irrigation water at 2 L·h -1 flow velocity was the most effective chemigation parameters for controlling eggplant against root-knot nematode. The functional diversity of the soil microbial community was significantly affected by fluopyram. The activities of soil urease and β —glucosidase decreased during the initial stages but recovered at later stages. In brief, fluopyram has advantageous for the efficient control of root-knot nematode with no deleterious effects on soil properties as well as chemigation is positive for application in karst landscape in Guangxi.

Effects of fluopyram and azadirachtin integration with sunn hemp on nematode communities in zucchini, tomato and sweet potato in Hawaii

“… Faske and Brown (2019) showed that the greatest effect of fluopyram on M. incognita mortality was up to 10 cm deep in sandy soil. Li et al (2020) then reported that fluopyram was most effective against Meloidogyne spp. at concentration of 60 g·ha −1 a.i.…”

Fluopyram: Optimal Application Time Point and Planting Hole Treatment to Control Meloidogyne incognita

“…Because the low water solubility and strong affinity of fluopyram to soil particles typically reduces movement into the upper 10 cm soil layers [16], we hypothesize that a targeted application of fluopyram in the planting hole will have reduced side effects on beneficial organisms and the soil microbial community [25,26]. Furthermore, a wide field application of fluopyram may not have sufficient RKN control, since RKN populations are found in similar amounts at both 0-30 cm and 30-60 cm soil depths [27], generally where plant roots and moist soil are present [28].…”

<strong>Breeding for </strong><strong>Root-Knot Nematode </strong><strong>Resistance in Eggplant: Progress and Prospects</strong>

“…This research aims to study the role of root-knot R genes in S. aculeatissimum and its potential presence in responses to M. incognita disease. With the growing usage of greenhouses for eggplant production, the concerns regarding RKNs are getting extremely serious (Li et al, 2020), and developing disease-resistant cultivars becomes an efficient and necessary way to combat associated diseases. Yang et al (2014) concluded that in S. torvum, the whole disease tolerance phase is amplified, consequently improving plant defense mechanisms and resistance survival as compared to tomato and potato.…”